Question

Over a set of 5 chess games, Yolanda's rating increased 10 points, increased 4 points,

decreased 21 points, increased 23 points and decreased 8 points.
Her rating is now 1647.
What was her rating before the 5 games?
A. 1639
B. 1649
C. 1655
D. 1661

Answer 1

C. 1655

Explanation:

+10, +4, -21, +23, -8

Adding all those terms together we get 8

1647 + 8 = 1655